I looked in the image-compare script and found that rsync's --itemize-changes option is what creates the column that made me curious. The manual page for rsync shows what's below. A better formatted view can be seen online here: https://manpages.ubuntu.com/manpages/ja ... ync.1.html
--itemize-changes, -i
Requests a simple itemized list of the changes that are being made to each file,
including attribute changes. This is exactly the same as specifying --out-
format='%i %n%L'. If you repeat the option, unchanged files will also be output,
but only if the receiving rsync is at least version 2.6.7 (you can use -vv with
older versions of rsync, but that also turns on the output of other verbose
messages).
The "%i" escape has a cryptic output that is 11 letters long. The general format
is like the string YXcstpoguax, where Y is replaced by the type of update being
done, X is replaced by the file-type, and the other letters represent attributes
that may be output if they are being modified.
The update types that replace the Y are as follows:
o A < means that a file is being transferred to the remote host (sent).
o A > means that a file is being transferred to the local host (received).
o A c means that a local change/creation is occurring for the item (such as
the creation of a directory or the changing of a symlink, etc.).
o A h means that the item is a hard link to another item (requires --hard-
links).
o A . means that the item is not being updated (though it might have
attributes that are being modified).
o A * means that the rest of the itemized-output area contains a message (e.g.
"deleting").
The file-types that replace the X are: f for a file, a d for a directory, an L for
a symlink, a D for a device, and a S for a special file (e.g. named sockets and
fifos).
The other letters in the string indicate if some attributes of the file have
changed, as follows:
o "." - the attribute is unchanged.
o "+" - the file is newly created.
o " " - all the attributes are unchanged (all dots turn to spaces).
o "?" - the change is unknown (when the remote rsync is old).
o A letter indicates an attribute is being updated.
The attribute that is associated with each letter is as follows:
o A c means either that a regular file has a different checksum (requires
--checksum) or that a symlink, device, or special file has a changed value.
Note that if you are sending files to an rsync prior to 3.0.1, this change
flag will be present only for checksum-differing regular files.
o A s means the size of a regular file is different and will be updated by the
file transfer.
o A t means the modification time is different and is being updated to the
sender's value (requires --times). An alternate value of T means that the
modification time will be set to the transfer time, which happens when a
file/symlink/device is updated without --times and when a symlink is changed
and the receiver can't set its time. (Note: when using an rsync 3.0.0
client, you might see the s flag combined with t instead of the proper T
flag for this time-setting failure.)
o A p means the permissions are different and are being updated to the
sender's value (requires --perms).
o An o means the owner is different and is being updated to the sender's value
(requires --owner and super-user privileges).
o A g means the group is different and is being updated to the sender's value
(requires --group and the authority to set the group).
o
o A u|n|b indicates the following information:
u means the access (use) time is different and is being updated to
the sender's value (requires --atimes)
o n means the create time (newness) is different and is being updated
to the sender's value (requires --crtimes)
o b means that both the access and create times are being updated
o The a means that the ACL information is being changed.
o The x means that the extended attribute information is being changed.
One other output is possible: when deleting files, the "%i" will output the string
"*deleting" for each item that is being removed (assuming that you are talking to a
recent enough rsync that it logs deletions instead of outputting them as a verbose
message).
I'm answering my own post, in case this might help others. Best regards all!
--itemize-changes, -i
Requests a simple itemized list of the changes that are being made to each file,
including attribute changes. This is exactly the same as specifying --out-
format='%i %n%L'. If you repeat the option, unchanged files will also be output,
but only if the receiving rsync is at least version 2.6.7 (you can use -vv with
older versions of rsync, but that also turns on the output of other verbose
messages).
The "%i" escape has a cryptic output that is 11 letters long. The general format
is like the string YXcstpoguax, where Y is replaced by the type of update being
done, X is replaced by the file-type, and the other letters represent attributes
that may be output if they are being modified.
The update types that replace the Y are as follows:
o A < means that a file is being transferred to the remote host (sent).
o A > means that a file is being transferred to the local host (received).
o A c means that a local change/creation is occurring for the item (such as
the creation of a directory or the changing of a symlink, etc.).
o A h means that the item is a hard link to another item (requires --hard-
links).
o A . means that the item is not being updated (though it might have
attributes that are being modified).
o A * means that the rest of the itemized-output area contains a message (e.g.
"deleting").
The file-types that replace the X are: f for a file, a d for a directory, an L for
a symlink, a D for a device, and a S for a special file (e.g. named sockets and
fifos).
The other letters in the string indicate if some attributes of the file have
changed, as follows:
o "." - the attribute is unchanged.
o "+" - the file is newly created.
o " " - all the attributes are unchanged (all dots turn to spaces).
o "?" - the change is unknown (when the remote rsync is old).
o A letter indicates an attribute is being updated.
The attribute that is associated with each letter is as follows:
o A c means either that a regular file has a different checksum (requires
--checksum) or that a symlink, device, or special file has a changed value.
Note that if you are sending files to an rsync prior to 3.0.1, this change
flag will be present only for checksum-differing regular files.
o A s means the size of a regular file is different and will be updated by the
file transfer.
o A t means the modification time is different and is being updated to the
sender's value (requires --times). An alternate value of T means that the
modification time will be set to the transfer time, which happens when a
file/symlink/device is updated without --times and when a symlink is changed
and the receiver can't set its time. (Note: when using an rsync 3.0.0
client, you might see the s flag combined with t instead of the proper T
flag for this time-setting failure.)
o A p means the permissions are different and are being updated to the
sender's value (requires --perms).
o An o means the owner is different and is being updated to the sender's value
(requires --owner and super-user privileges).
o A g means the group is different and is being updated to the sender's value
(requires --group and the authority to set the group).
o
o A u|n|b indicates the following information:
u means the access (use) time is different and is being updated to
the sender's value (requires --atimes)
o n means the create time (newness) is different and is being updated
to the sender's value (requires --crtimes)
o b means that both the access and create times are being updated
o The a means that the ACL information is being changed.
o The x means that the extended attribute information is being changed.
One other output is possible: when deleting files, the "%i" will output the string
"*deleting" for each item that is being removed (assuming that you are talking to a
recent enough rsync that it logs deletions instead of outputting them as a verbose
message).
I'm answering my own post, in case this might help others. Best regards all!
Statistics: Posted by KevinTheDrummer — Tue Mar 26, 2024 8:10 pm